oh cool! this was an effective, charming little racing game. i think it's rad you included four(!) tracks, too. i do have some feedback: i think the speedometer shouldn't obscure how fast you're going, it is only when you slow down it becomes legible. i agree with what someone wrote earlier that hitting the sides currently doesn't feel good. perhaps you could bounce the player off the edges instead of coming to a complete stop? also: let me go faster!! i wanna zoom like my life depends on it, like f-zero. >:)
good job on your entry!